Log In / Register to View Member Pricing if Available. Use The Request For Quote Button For RFQs, Quantity Discounts, Out-Of-Stock Items,
or Agencies / Qualified Individuals Looking to Purchase & Ship
Regulated Products to Restricted States.

HoloSun HS503R Reflex Sights

(2 reviews) Write a Review
0.70 LBS
Request Quote For The BEST Deal
  • HoloSun HS503R Reflex Sights
  • HoloSun HS503R Reflex Sights
  • HoloSun HS503R Reflex Sights
  • HoloSun HS503R Reflex Sights
  • HoloSun HS503R Reflex Sights
  • HoloSun HS503R Reflex Sights
  • HoloSun HS503R Reflex Sights
Frequently bought together:


The HS503R is a small compact micro red dot optic that features Holosuns new Rheo Stat Dial to adjust brightness settings. Employing our LED technology, The HS503R can achieve constant on battery life of up to 5 years on medium setting. This optic features Holosuns proprietary Multi-reticle System (MRS)


  • Optional 65 MOA Circle Dot or 2 MOA Dot
  • Parallax free with unlimited eye relief
  • Rheo Stat Dial controls and streamlined housing design
  • Low mount and 1/3 Co-witness mount included
  • Adaptable to Picatinny and Weaver rails
  • CNC machining with T6061-T6 aluminum housing.


Color: Black
Finish: MAO
Fabric/Material: Aluminum
Magnification: 1x
Objective Lens Diameter: 20 mm
Reticle: 2MOA Dot & 65MOA Ring
Illumination Type: LED
Brightness Settings: 10
Eye Relief: Unlimited
Adjustment Click Value: 0.5 MOA
W/E Travel at 100 Yds: 50 MOA
Parallax: Parallax Free
Optical Coating: Multi-Coating
Battery Type: CR2032
Battery Life: 100000 hours
Operating Temperature: -22 - 140 Fahrenheit
Weather Resistance: Yes
Water Resistance Level: IP67
Length: 2.75 in
Width: 1.43 in
Height: 1.62 in
Weight: 3.53 oz

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to You must be 18+ years old to shop and or purchase on our website and 21+ to purchase Ammunition/Firearms. Check local laws before ordering as you certify you are of legal age and satisfy all federal, state, and local legal/regulatory requirements. There are NO returns or exchanges on armor, firearms, ammunition, PPE equipment. Ammo ships UPS ground to the lower 48 states.
We reserve the right to fix any critical errors.

. .
View AllClose

Additional Information

Reflex Sights
Circle Dot Red
View AllClose

2 Reviews

  • 5

    Works great not my first Holosun not my last.

  • 4

    On sale for $129....never had one before but love the “possibilities”

View AllClose